They're universal, meant to fit different sized tubes. You'll either use the middle portion, or the big end, depending on what the inside diameter of the tubing is. The smallest diameter portion is too insert into a lathe chuck or drill motor, as the pictures show.
Dimensions: 1" Long, .075" OD x .900 OD (Suitable for .095" Wall DOM Tubing & Most Frame Tubes)SKU: DCC-100SL*The .075" portion fits perfectly inside .095" DOM steel tubing (what we use on all our products) and the other side at .900" fits most frames as-is but can be ground down as shown to fit smaller ID tubing.**Sold as a pair.
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